The phase equilibrium of the H<sub>2</sub> + cyclopentane binary clathrate hydrate is important because cyclopentane (CP) has been shown to reduce the equilibrium storage pressures similar to that of tetrahydrofuran (THF). In this work, we apply correlations for the H<sub>2</sub> + CP binary clathrate hydrate system based on the Gibbs free energy and the Kihara potential. The correlation is also applied to the H2 + THF binary clathrate hydrate system and compared with literature results. It was found that the models could correlate both H<sub>2</sub> + CP and H<sub>2</sub> + THF sufficiently. From the calculated hydrogen occupancies and the Langmuir constants of CP and THF, the relationship between hydrate dissociation enthalpy and hydrogen occupancy was studied. The hydrate dissociation enthalpy varied according to phase equilibrium conditions at low pressure. The Langmuir constant of CP was lower than that of THF which implies that the formation of CP clathrate hydrate is more difficult to form than THF clathrate hydrate. As hydrogen occupancies became higher, the hydrate dissociation enthalpies of H<sub>2</sub> + hydrocarbon binary clathrate hydrate approached a constant value.